Determination of the tolerance of physiological, morphological, and yield parameters of landrace durum wheat (Triticum durum Desf.) to high-temperature stress
Yükleniyor...
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gültekin Özdemir
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In the South-eastern Anatolia Region, where the climate is favorable to
cultivation for durum wheat, there have been notable reductions in both
yield and quality due to biotic and abiotic stress factors in the region.
Primary one of these stresses is high-temperature stress. High-temperature
stress, specifically during the late flowering stage and early grain filling
stage, results in substantial reductions in both crop yield and quality. In
this study, several practical, easily and rapidly quantifiable physiological,
morphological, and yield-related parameters that may be used in durum
wheat improvement programs in the region for high-temperature
stress tolerance were investigated. Ninety landrace durum genotypes
and 4 standard cultivars were used. The study was carried out at GAP
(South-eastern Anatolia Project) International Agricultural Research and
Training Centre in an air conditioning room according to an augmented
design under optimum conditions and stressful conditions where hightemperature stress was created. Compared to optimum conditions, there
were reductions in flag leaf greening time by 20%, days to maturity by 7%,
spike length by 10%, peduncle length by 18%, grain filling time by 23%,
number of spikelets on the spike by 12%, number of grains on the spike by
39%, and thousand-kernel weight by 33%, while grain filling rate increased
under high-temperature stress conditions. The genotypes 82, 83, 87, 88, 99,
and 103 and the standard varieties Artuklu and Sümerli prevailed in both
optimum and stress conditions. The fact that leaf erectness, flag leaf greening
time, grain filling time, and leaf chlorophyll content among morphological
and physiological characteristics had a significant correlation with yield
components under both conditions indicates that these characteristics
can be used as selection criteria for tolerance to stressful conditions in the
region.
Açıklama
Anahtar Kelimeler
Landrace, Durum wheat, High-temperature stress, Tolerance, Selection
Kaynak
International Journal of Agriculture, Environment and Food Sciences
WoS Q Değeri
Scopus Q Değeri
Cilt
7
Sayı
3
Künye
Okan, M., Alp, A. ve Haliloğlu, K. (2023). Determination of the tolerance of physiological, morphological, and yield parameters of landrace durum wheat (Triticum durum Desf.) to high-temperature stress. International Journal of Agriculture, Environment and Food Sciences, 7(3), 607-620.
